A kind of preparation method of clutch face blank

Abstract

The present invention relates to a preparation method of a clutch facing blank. The method includes using a wrapping machine to wrap rubber sheets prepared from rubber, a filler and a vulcanization agent on the surfaces of continuous glass fiber bundles impregnated with phenolic resin to get the glass fiber bundles wrapped with rubber, and finally winding to obtain the clutch facing blank. According to the preparation method of the present invention, the rubber does not need to be dissolved in an organic solvent such as gasoline to get a slurry, the use of organic solvents is prevented, the cost is saved, and the environmental pollution is reduced. Impregnating a layer of phenolic resin on the surfaces of the glass fiber bundles can make the fibers combine with rubber and other fillers closely. The rubber and the filler are mixed uniformly after banburying and coated on the surfaces of the fibers, so that the final product is stable in quality. Two processes of rubberizing and cutting are separated by the wrapping machine in the method. On rubberizing, an upper roller and a lower roller do not contact directly to prevent the abrasion of the rollers, therefore the service life of the wrapping machine is extended.

Description

technical field [0001] The invention relates to a method for preparing a clutch face blank, in particular to a method for preparing a clutch face blank by using an encapsulating device. Background technique [0002] At present, the preparation of domestic clutch face sheets generally adopts a wet process, that is, mixing rubber, resin and fillers, and then dissolving them with gasoline and other organic solvents to make a slurry, and then impregnating the fibers in the slurry through the slurry tank, drying and winding It becomes a billet, and the product is obtained through hot pressing and post-processing. Among them, dissolving rubber requires a large amount of gasoline, which increases the production cost, and the process of making rubber slurry is also time-consuming, and in the process of impregnating the slurry, the dense filler in the slurry will continue to sink, resulting in inconsistent components of the slurry. Evenly distributed on the surface of the continuous...

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Problems solved by technology

Among them, dissolving rubber requires a large amount of gasoline, which increases the production cost, and the process of making rubber slurry is also time-consuming, and in the process of impregnating the slurry, the dense filler in the slurry will continue to sink, resulting in inconsistent components of the slurry. Evenly distributed on the surface of continuous fibers, resulting in large fluctuations in the quality of clutch products

Some manufacturers of clutch face sheets use a rubber covering machine to cover the rubber sheet after kneading on the surface of the fiber, and cut the rubber into strips at the same time as the rubber is covered. The convex parts of the two rollers used are in direct contact with each other to cut the glue and divide the strips. There will be a lot of wear between the contact parts of the two rollers. The rollers must be removed and polished in less than one month of production. reduced productivity

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